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authorDaniel Kurtz <djkurtz@chromium.org>2013-03-07 19:43:33 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2013-03-08 16:03:29 -0800
commit22dfab7fd7fd5a8a2c5556ca0a8fd35fc959abc8 (patch)
tree009b5cdf5cba8e20266861989d38bc777ef845f7 /include/linux/i2c/atmel_mxt_ts.h
parent67a865a40b46d4e5d2afd154303b10220202140f (diff)
Input: atmel_mxt_ts - Support for touchpad variant
This same driver can be used by atmel based touchscreens and touchpads (buttonpads). Platform data may specify a device is a touchpad using the is_tp flag. This will cause the driver to perform some touchpad specific initializations, such as: * register input device name "Atmel maXTouch Touchpad" instead of Touchscreen. * register BTN_LEFT & BTN_TOOL_* event types. * register axis resolution (as a fixed constant, for now) * register BUTTONPAD property * process GPIO buttons using reportid T19 Input event GPIO mapping is done by the platform data key_map array. key_map[x] should contain the KEY or BTN code to send when processing GPIOx from T19. To specify a GPIO as not an input source, populate with KEY_RESERVED, or 0. Signed-off-by: Daniel Kurtz <djkurtz@chromium.org> Signed-off-by: Benson Leung <bleung@chromium.org> Signed-off-by: Nick Dyer <nick.dyer@itdev.co.uk> Tested-by: Olof Johansson <olof@lixom.net> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/i2c/atmel_mxt_ts.h')
-rw-r--r--include/linux/i2c/atmel_mxt_ts.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/i2c/atmel_mxt_ts.h b/include/linux/i2c/atmel_mxt_ts.h
index f027f7a6351..99e379b7439 100644
--- a/include/linux/i2c/atmel_mxt_ts.h
+++ b/include/linux/i2c/atmel_mxt_ts.h
@@ -15,6 +15,9 @@
#include <linux/types.h>
+/* For key_map array */
+#define MXT_NUM_GPIO 4
+
/* Orient */
#define MXT_NORMAL 0x0
#define MXT_DIAGONAL 0x1
@@ -39,6 +42,8 @@ struct mxt_platform_data {
unsigned int voltage;
unsigned char orient;
unsigned long irqflags;
+ bool is_tp;
+ const unsigned int key_map[MXT_NUM_GPIO];
};
#endif /* __LINUX_ATMEL_MXT_TS_H */